usb_audio_class_example

Source path: example\cherryusb\device\audio_v1_mic

Supported Platforms

sf32lb52-lcd_n16r8

Overview

This example demonstrates USB microphone recording and speaker audio playback functionality based on USB audio class, including:

The host can connect to devices via USB to enable microphone recording and speaker playback.

Usage Instructions

Hardware Requirements

Before running this example, you need to prepare:

A development board supported by this example (Supported Platforms).
A USB-A to Type-C data cable with data transfer capability.
A host device that supports USB.

menuconfig Configuration

Enable AUDIO CODEC and AUDIO PROC:
Enable AUDIO (AUDIO):
Enable AUDIO MANAGER (AUDIO_USING_MANAGER):
Modify the default AUDIO RX Path:

Compilation and Flashing

Switch to the example project directory and run the scons command to compile:

scons --board=sf32lb52-lcd_n16r8 -j32

Switch to the example project/build_xx directory and run uart_download.bat, then follow the prompts to select the port for downloading:

$ ./uart_download.bat

     Uart Download

please input the serial port num:

For detailed steps on compilation and downloading, please refer to the relevant introduction in Quick Start.

Expected Results

After the example starts: When the host connects to the board via the data cable, a new microphone device (SiFli UAC DEMO) and speaker device (SiFli UAC DEMO) will appear in the audio input and output section of the host’s device manager. After the host opens the recording device, it can select the microphone device for normal recording. In the sound output section, you can select SiFli UAC DEMO as the output device for audio playback.

Troubleshooting

Reference Documents

Change Log

Version	Date	Release Notes
0.0.1	09/2025	Initial version